Difference Between Client And Server Sided

I seen way too many people not knowing the difference between client and server side hacks.

These 2 here stand out today when i read them.
Quote:

I hacked CS money,HP,SP.
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Using Cheat engine with RS only make it go server sided.

Client Sided = Anything you can change on your end of the game.
If it is real/or just the visual money HP, SP and you see it, then it is Client Sided, Because the game was coded to let the client handle it.

Server Sided = Anything the server is controlling.
If you change your money ,HP,SP and you see it but the game doesnt recognize it as real, Then they are server sided and cant be done with memory. Server Side hacking is getting into the server and altering data.
Just because you hacked HP,SP or money and it is real,that is still client side hacks. Because the server isnt controlling it. It was left up to the client end of the game to handle it. Even with packets, Your sending a message from the client telling the server what you have. So the server is just logging it and trusting the client end to handle what you get.

I hope this makes sense to people who dont really know what the difference is.